Need a few creatives ways to finance

[Logan Larochelle]

ok here is what I am trying to do, I own half of the duplex and the owner that owns the other half wants to sell in January. I just  changed my primary address to a home I bought 3 months ago so and I don't have enough money for a investment purchase of 20% 

What are a few ways that I can get financed without the 20% or have her transfer the dead. She wants $50,000 for the place and o can't use conventional or fha. I possibly could use my sister Info but if like to get it myself.